public OldHistorianStream(string oldFileName)
{
m_key = new HistorianKey();
m_value = new HistorianValue();
m_archiveFile = new OldHistorianReader();
m_archiveFile.Open(oldFileName);
m_enumerator = m_archiveFile.Read().GetEnumerator();
}
public static long ConvertVersion1FileHandleDuplicates(string oldFileName, string newFileName, EncodingDefinition compressionMethod, out long readTime, out long sortTime, out long writeTime)
{
if (!File.Exists(oldFileName))
{
throw new ArgumentException("Old file does not exist", "oldFileName");
}
if (File.Exists(newFileName))
{
throw new ArgumentException("New file already exists", "newFileName");
}
HistorianKey key = new HistorianKey();
HistorianValue value = new HistorianValue();
long startTime;
int count;
// Derived SortedPointBuffer class increments EntryNumbers instead of removing duplicates
SortedPointBuffer points;
startTime = DateTime.UtcNow.Ticks;
using (OldHistorianReader archiveFile = new OldHistorianReader())
{
archiveFile.Open(oldFileName);
count = archiveFile.PointsArchived;
points = new SortedPointBuffer(count, false);
foreach (OldHistorianReader.DataPoint point in archiveFile.Read())
{
key.Timestamp = (ulong)point.Timestamp.Ticks;
key.PointID = (ulong)point.PointID;
value.Value1 = BitConvert.ToUInt64(point.Value);
value.Value3 = (ulong)point.Flags;
points.TryEnqueue(key, value);
}
}
readTime = DateTime.UtcNow.Ticks - startTime;
startTime = DateTime.UtcNow.Ticks;
points.IsReadingMode = true;
sortTime = DateTime.UtcNow.Ticks - startTime;
startTime = DateTime.UtcNow.Ticks;
SortedTreeFileSimpleWriter <HistorianKey, HistorianValue> .Create(Path.Combine(FilePath.GetDirectoryName(newFileName), FilePath.GetFileNameWithoutExtension(newFileName) + ".~d2i"), newFileName, 4096, null, compressionMethod, points);
writeTime = DateTime.UtcNow.Ticks - startTime;
return(count);
}